/*
在使用的时候必须遵循的格式为：./tcpclient server_ip server_port
例如:./tcpclient 127.0.0.1
*/

#include<iostream>
#include<cstring>
#include<unistd.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include"Log.hpp"
#include"InetAddr.hpp"

using namespace log_ns;



int main(int argc,char *argv[])
{
    if (argc != 3)
    {
        std::cerr << "Usage: " << argv[0] << " server-ip server-port" << std::endl;
        exit(0);
    }

    std::string serverip=argv[1];
    uint16_t serverport=std::stoi(argv[2]);
    //创建socket
    int sockfd=::socket(AF_INET,SOCK_STREAM,0);
    if(sockfd<0)
    {
        std::cerr<<"create socket error"<<std::endl;
        exit(1);
    }
    //注意：客户端不需要显示的bind，但是一定要有自己的ip和port，所以需要隐式的bind，OS会自动bind sockfd，用自己的IP和随机端口号
    struct sockaddr_in server;
    memset(&server,0,sizeof(server));
    server.sin_family=AF_INET;
    server.sin_port=htons(serverport);
    //server.sin_addr.s_addr
    ::inet_pton(AF_INET,serverip.c_str(),&server.sin_addr);

    int n=::connect(sockfd,(struct sockaddr*)&server,sizeof(server));
    if(n<0)
    {
        std::cerr<<"connect socket error"<<std::endl;
        exit(2);
    }

    while(true)
    {
        std::string message;
        std::cout<<"Enter # ";
        std::getline(std::cin,message);

        write(sockfd,message.c_str(),message.size());

        char echo_buffer[1024];
        n=read(sockfd,echo_buffer,sizeof(echo_buffer));
        if(n>0)
        {
            echo_buffer[n]=0;
            std::cout<<echo_buffer<<std::endl;
        }
        else
        {
            break;
        }
    }

    ::close(sockfd);

    return 0;
}